公开(公告)号：US09019026B2

公开(公告)日：2015-04-28

申请号：US14073198

申请日：2013-11-06

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Hong Wu Lin

IPC: H03K3/023 ,  H03K3/0231

CPC classification number: H03K3/0231

Abstract: An oscillator module includes a first MOS transistor and a capacitor. The capacitor is coupled between a gate and source of the first MOS transistor. The drain of the first MOS transistor receives a first bias current and generates an oscillating output signal. A switching circuit operates in response to the oscillating output signal to selective charge and discharge the capacitor. A current sourcing circuit is configured to generate the bias current. The current sourcing circuit includes a second MOS transistor which has an identical layout to the first MOS transistor and receives a second bias current. A resistor is coupled between a gate and source of the second MOS transistor. The current sourcing circuit further includes a current mirror having an input configured to receive a reference current passing through the resistor and generate the first and second bias currents.

Abstract translation: 振荡器模块包括第一MOS晶体管和电容器。 电容器耦合在第一MOS晶体管的栅极和源极之间。 第一MOS晶体管的漏极接收第一偏置电流并产生振荡输出信号。 开关电路响应于振荡输出信号而工作以对电容器进行选择性充电和放电。 电流源电路被配置为产生偏置电流。 电流源电路包括与第一MOS晶体管具有相同布局并接收第二偏置电流的第二MOS晶体管。 电阻器耦合在第二MOS晶体管的栅极和源极之间。 电流源电路还包括电流镜，其具有被配置为接收通过电阻器的参考电流并产生第一和第二偏置电流的输入。

公开(公告)号：US20150042229A1

公开(公告)日：2015-02-12

申请号：US14454867

申请日：2014-08-08

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Yi Jun Duan ,  Tao Tao Huang

IPC: H05B33/08

CPC classification number: H05B33/0851 ,  H03F3/45215 ,  H03F2200/351 ,  H05B33/0812 ,  H05B33/0815 ,  H05B33/0827 ,  H05B33/0887 ,  Y02B20/341 ,  Y02B20/347

Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.

Abstract translation: 配置为驱动发光装置的驱动装置包括可操作以在操作期间经由节点向发光装置提供电流的驱动电流源模块。 耦合到节点的保护模块和驱动电流源模块在操作期间选择性地向节点注入电流。 基于节点上的电压的检测结果来控制驱动电流源模块。

公开(公告)号：US08947060B2

公开(公告)日：2015-02-03

申请号：US12953392

申请日：2010-11-23

Applicant: Da Song Lin ,  Ni Zeng ,  Gang Zha ,  Xianfeng Xiong ,  Yiwei Zhang

Inventor： Da Song Lin ,  Ni Zeng ,  Gang Zha ,  Xianfeng Xiong ,  Yiwei Zhang

IPC: G05F1/00 ,  H02M1/32 ,  H02M3/00

CPC classification number: H02M1/32 ,  H02M3/00

Abstract: An embodiment of the invention relates to a power converter formed with an error amplifier and a related method. In an embodiment, a first switch is coupled in series with an error amplifier compensation capacitor. Upon detection of a current level greater than a threshold level, the compensation capacitor is decoupled from the error amplifier by opening the first switch. In an embodiment, a second switch is coupled in parallel with the compensation capacitor, and the current-sensing circuit enables conductivity of the second switch to discharge the compensation capacitor upon detection of the current level greater than the threshold level. The second switch is opened upon detection of the current level less than the threshold level. In an embodiment, the current-sensing circuit controls an output current of the power converter at a current-limit level upon detection of the internal current level greater than the threshold level.

Abstract translation: 本发明的实施例涉及一种形成有误差放大器的功率转换器及相关方法。 在一个实施例中，第一开关与误差放大器补偿电容器串联耦合。 在检测到大于阈值电平的电流电平时，通过打开第一开关将补偿电容器与误差放大器去耦。 在一个实施例中，第二开关与补偿电容器并联耦合，并且当检测到大于阈值电平的电流电平时，电流检测电路使得​​第二开关的电导率能够使补偿电容器放电。 在检测到小于阈值电平的当前电平时，打开第二个开关。 在一个实施例中，电流检测电路在检测到大于阈值电平的内部电流电平时，将电力转换器的输出电流控制在限流电平。

公开(公告)号：US20140327419A1

公开(公告)日：2014-11-06

申请号：US14267957

申请日：2014-05-02

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Ni Zeng

IPC: G05F1/573

CPC classification number: G05F1/573

Abstract: A current limiting circuit includes a current sensing module that is configured to sense an output current of a power transistor and to generate a corresponding sensing current which is proportional to the output current. A first current limiting module coupled to the current sensing module is configured to generate a first limiting current based on the sensing current when a variation of the output current of the power transistor exceeds a first current level. A second current limiting module coupled to the current sensing module is configured to generate a second limiting current based on the sensing current when a variation of the output current of the power transistor exceeds a second current level. A converting module coupled to the first and second current limiting modules and the power transistor controls a gate voltage of the power transistor based at least on the first and second limiting currents.

Abstract translation: 电流限制电路包括电流感测模块，其被配置为感测功率晶体管的输出电流并产生与输出电流成比例的相应感测电流。 耦合到电流感测模块的第一限流模块被配置为当功率晶体管的输出电流的变化超过第一电流电平时，基于感测电流产生第一极限电流。 耦合到电流感测模块的第二限流模块被配置为当功率晶体管的输出电流的变化超过第二电流电平时，基于感测电流产生第二极限电流。 耦合到第一和第二限流模块的转换模块和功率晶体管至少基于第一和第二限制电流来控制功率晶体管的栅极电压。

公开(公告)号：US20130314159A1

公开(公告)日：2013-11-28

申请号：US13875766

申请日：2013-05-02

Applicant: Yi Jun Duan

Inventor： Yi Jun Duan

IPC: H02H9/04 ,  H03F3/45

CPC classification number: H03F3/45179 ,  H02H9/043 ,  H03F3/45071 ,  H03F3/45183 ,  H03F2200/471 ,  H03F2203/45022 ,  H03F2203/45526 ,  H03F2203/45674

Abstract: An amplifier circuit includes an input terminal and an output terminal. A current sinking transistor includes a first conduction terminal coupled to the output terminal and a second conduction terminal coupled to a reference supply node. A voltage sensing circuit has a first input coupled to the input terminal and a second input coupled to the output terminal. An output of the voltage sensing circuit is coupled to the control terminal of the current sinking transistor. The voltage sensing circuit functions to sense a rise in the voltage at the output terminal which exceeds the voltage at the input terminal, and respond thereto by activating the current sinking transistor.

Abstract translation: 放大器电路包括输入端子和输出端子。 电流吸收晶体管包括耦合到输出端子的第一导电端子和耦合到参考电源节点的第二导电端子。 电压感测电路具有耦合到输入端的第一输入和耦合到输出端的第二输入。 电压感测电路的输出耦合到电流吸收晶体管的控制端。 电压感测电路用于感测输出端子处的电压上升超过输入端子处的电压，并通过激活电流吸收晶体管对其进行响应。

公开(公告)号：US08590395B2

公开(公告)日：2013-11-26

申请号：US12942349

申请日：2010-11-09

Applicant: Henry Ge

Inventor： Henry Ge

IPC: G01F1/58

CPC classification number: G01F1/28

Abstract: A flow meter for measurement of a metered fluid has a sensor element that receives a flow input of a metered fluid and outputs a flow output of the metered fluid, and a battery element. The sensor element has an inductor element and a magnetic element coupled to the inductor element. In response to movement of the magnetic element relative to the inductor element caused by a fluid pressure differential of the metered fluid, the inductive value of the inductor element changes.

Abstract translation: 用于测量计量流体的流量计具有接收计量流体的流量输入并输出计量流体的流量输出的传感器元件和电池元件。 传感器元件具有电感器元件和耦合到电感器元件的磁性元件。 响应于由于计量流体的流体压差导致的磁性元件相对于电感元件的移动，电感元件的感应值发生变化。

公开(公告)号：US20130169610A1

公开(公告)日：2013-07-04

申请号：US13648826

申请日：2012-10-10

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Tao Tao Huang ,  Meng Wang

IPC: G09G5/00 ,  H03K3/00

CPC classification number: G09G3/36 ,  G09G3/3696

Abstract: A driving circuit includes a controller, a converter and a feedback module. The controller receives an input supply at a supply node, and generates a control signal according to the input supply. The converter receive an input signal at an input node and a control signal at a control node, and is configured to convert the input signal to a driving signal in response to the control signal. The driving signal of the converter is feedback by the feedback module to the controller. The input supply is generated from the input signal or the feedback driving signal. The drive circuit may drive a display device.

Abstract translation: 驱动电路包括控制器，转换器和反馈模块。 控制器在供电节点处接收输入电源，并根据输入电源产生控制信号。 转换器在输入节点处接收输入信号并在控制节点接收控制信号，并且被配置为响应于控制信号将输入信号转换成驱动信号。 转换器的驱动信号由反馈模块反馈给控制器。 输入电源由输入信号或反馈驱动信号产生。 驱动电路可以驱动显示装置。

公开(公告)号：US08471299B2

公开(公告)日：2013-06-25

申请号：US12861678

申请日：2010-08-23

Applicant: Guo Hua Zhong ,  Mei Yang

Inventor： Guo Hua Zhong ,  Mei Yang

IPC: H01L29/76

CPC classification number: H01L21/4871 ,  H01L23/4824 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A power transistor for use in an audio application is laid out to minimize hot spots. Hot spots are created by non-uniform power dissipation or overly concentrated current densities. The source and drain pads are disposed relative to each other to facilitate uniform power dissipation. Interleaving metal fingers and upper metal layers are connected directly to lower metal layers in the absence of vias to improve current density distribution. This layout improves some fail detection tests by 17%.

Abstract translation: 布置用于音频应用的功率晶体管以最小化热点。 热点由不均匀的功耗或过度集中的电流密度产生。 源极和漏极焊盘相对于彼此设置以促进均匀的功率耗散。 在没有通孔的情况下，交叉金属指和上金属层直接连接到下金属层，以改善电流密度分布。 这种布局改进了17％的失败检测测试。

公开(公告)号：US20130069721A1

公开(公告)日：2013-03-21

申请号：US13555611

申请日：2012-07-23

Applicant: Hong Wu Lin

Inventor： Hong Wu Lin

IPC: H03F3/45

CPC classification number: H03F3/45183 ,  H03F3/185 ,  H03F2203/45528 ,  H03F2203/45544 ,  H03F2203/45594 ,  H03F2203/45648

Abstract: A circuit includes a first circuit module with a first input node, a second input node and an output node. The first circuit module receives an input signal at the first input node and generates an amplified signal at the output node. The circuit further includes a second circuit module coupled between the output node and a reference potential line. The second circuit selectively draws a current from the output node in response to a first control signal. The first control signal is generated in response to sensing a voltage fluctuation at a power supply node which supplies power to the first circuit module.

Abstract translation: 电路包括具有第一输入节点的第一电路模块，第二输入节点和输出节点。 第一电路模块在第一输入节点处接收输入信号，并在输出节点产生放大信号。 电路还包括耦合在输出节点和参考电位线之间的第二电路模块。 响应于第一控制信号，第二电路从输出节点选择性地绘制电流。 响应于感测在向第一电路模块供电的电源节点处的电压波动而产生第一控制信号。

公开(公告)号：US08368377B2

公开(公告)日：2013-02-05

申请号：US12938244

申请日：2010-11-02

Applicant: Jun Liu

Inventor： Jun Liu

IPC: G05F3/20 ,  G05F3/26

CPC classification number: G05F3/30

Abstract: An integrated circuit includes a bandgap reference generator and a voltage regulator. The bandgap reference generator includes a first current path, and a first bipolar transistor with an emitter-collector path in the first current path. The voltage regulator includes a second current path, wherein the second current path mirrors the first current path; a resistor configured to receive a current of the second current path; a second bipolar transistor with a base and a collector of the second bipolar transistor being interconnected; and a third bipolar transistor connected in series with the second bipolar transistor and the resistor. A base and a collector of the third bipolar transistor are interconnected.

Abstract translation: 集成电路包括带隙参考发生器和电压调节器。 带隙基准发生器包括第一电流路径和在第一电流路径中具有发射极 - 集电极路径的第一双极晶体管。 电压调节器包括第二电流路径，其中第二电流路径反射第一电流路径; 电阻器，被配置为接收所述第二电流路径的电流; 具有第二双极晶体管的基极和集电极的第二双极晶体管被互连; 以及与第二双极晶体管和电阻器串联连接的第三双极晶体管。 第三双极晶体管的基极和集电极相互连接。